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  • Quantifying the effect of land use and land cover changes on green water and blue water in northern part of China 

    Liu, X.; Ren, L.; Yuan, F.; Singh, V. P.; Fang, X.; Yu, Z.; Zhang, W. (Copernicus Publications on behalf of the European Geosciences Union, 2009-06-12)
    Changes in land use and land cover (LULC) have been occurring at an accelerated pace in northern parts of China. These changes are significantly impacting the hydrology of these parts, such as Laohahe Catchment. The ...
  • A fractional dispersion model for overland solute transport 

    Deng, Zhi-Qiang; de Lima, M. Isabel P.; Singh, Vijay P.; de Lima, Jo?�o L. M. P. (American Geophysical Union, 2006-03-18)
    Using the kinematic-wave overland flow equation and a fractional dispersion-advection equation, a process-oriented, physically-based model is developed for overland solute transport. Two scenarios, one consisting of downslope ...
  • Kinematic wave model for transient bed profiles in alluvial channels under nonequilibrium conditions 

    Tayfur, Gokmen; Singh, Vijay P. (American Geophysical Union, 2007-12-27)
    Transient bed profiles in alluvial channels are generally modeled using diffusion (or dynamic) waves and assuming equilibrium between detachment and deposition rates. Equilibrium sediment transport can be considerably ...
  • Hybrid fuzzy and optimal modeling for water quality evaluation 

    Wang, Dong; Singh, Vijay P.; Zhu, Yuansheng (American Geological Union, 2007-05-08)
    Water quality evaluation entails both randomness and fuzziness. Two hybrid models are developed, based on the principle of maximum entropy (POME) and engineering fuzzy set theory (EFST). Generalized weighted distances are ...
  • Kinematic wave model of bed profiles in alluvial channels 

    Tayfur, Gokmen; Singh, Vijay P. (American Geophysical Union, 2006-06-21)
    A mathematical model, based on the kinematic wave (KW) theory, is developed for describing the evolution and movement of bed profiles in alluvial channels. The model employs a functional relation between sediment transport ...
  • Downstream hydraulic geometry relations: 2. Calibration and testing 

    Singh, Vijay P.; Yang, Chih Ted; Deng, Zhi-Qiang (American Geophysical Union, 2003-12-04)
    Using 456 data sets under bank-full conditions obtained from various sources, the geometric relations, derived in part 1 [ Singh et al., 2003 ], are calibrated and verified using the split sampling approach. The calibration ...
  • Downstream hydraulic geometry relations: 1. Theoretical development 

    Singh, Vijay P.; Yang, Chih Ted; Deng, Z. Q. (American Geophysical Union, 2003-12-04)
    In this study, it is hypothesized that (1) the spatial variation of the stream power of a channel for a given discharge is accomplished by the spatial variation in channel form (flow depth and channel width) and hydraulic ...
  • Solute transport under steady and transient conditions in biodegraded municipal solid waste 

    Bendz, David; Singh, Vijay P. (American Geophysical Union, 1999-08)
    The transport of a conservative tracer (lithium) in a large (3.5 m3) undisturbed municipal solid waste sample has been investigated under steady and fully transient conditions using a simple model. The model comprises a ...
  • Kinematic wave model for water movement in municipal solid waste 

    Bendz, David; Singh, Vijay P.; Rosqvist, H?�kan; Bengtsson, Lars (American Geophysical Union, 1998-11)
    The movement of water in a large (3.5 m3) undisturbed sample of 22-year-old municipal solid waste has been modeled using a kinematic wave approximation for unsaturated infiltration and internal drainage. The model employs ...
  • An entropy-based morphological analysis of river basin networks 

    Fiorentino, Mauro; Claps, Pierluigi; Singh, Vijay P. (American Geophysical Union, 1993-04)
    Under the assumption that the only information available on a drainage basin is its mean elevation, the connection between entropy and potential energy is explored to analyze drainage basins morphological characteristics. ...
  • A stochastic model for sediment yield using the Principle of Maximum Entropy 

    Singh, V. P.; Krstanovic, P. F. (American Geophysical Union, 1987-05)
    The principle of maximum entropy was applied to derive a stochastic model for sediment yield from upland watersheds. By maximizing the conditional entropy subject to certain constraints, a probability distribution of ...
  • A kinematic model for surface irrigation: Verification by experimental data 

    Singh, Vijay P.; Ram, Rama S. (American Geophysical Union, 1983-12)
    A kinematic model for surface irrigation is verified by experimental data obtained for 31 borders. These borders are of varied characteristics. Calculated values of advance times, water surface profiles when water reaches ...
  • A kinematic model for surface irrigation: An extension 

    Sherman, Bernard; Singh, Vijay P. (American Geophysical Union, 1982-06)
    The kinematic model for surface irrigation, reported previously by Sherman and Singh (1978), is extended. Depending upon the duration of irrigation and time variability of infiltration, three cases are distinguished. ...
  • A distributed converging overland flow model: 3. Application to Natural Watersheds 

    Singh, Vijay P. (American Geophysical Union, 1976-10)
    The proposed distributed converging overland flow model is utilized to predict surface runoff from three natural agricultural watersheds. The Lax-Wendroff scheme is used to obtain numerical solutions. For determination of ...
  • Granulometric characterization of sediments transported by surface runoff generated by moving storms 

    de Lima, J. L. M. P.; Souza, C. C. S.; Singh, V. P. (Copernicus Publications on behalf of the European Geosciences Union and the American Geophysical Union, 2008-12-16)
    Due to the combined effect of wind and rain, the importance of storm movement to surface flow has long been recognized, at scales ranging from headwater scales to large basins. This study presents the results of laboratory ...
  • A distributed converging overland flow model: 1. Mathematical solutions 

    Sherman, Bernard; Singh, Vijay P. (American Geophysical Union, 1976-10)
    In models for overland flow based on kinematic wave theory the friction parameter is assumed to be constant. This paper studies a converging geometry and allows continuous spatial variability in the parameter. Parameter ...
  • A distributed converging overland flow model: 2. Effect of infiltration 

    Sherman, Bernard; Singh, Vijay P. (American Geophysical Union, 1976-10)
    The overland flow on an infiltrating converging surface is studied. Mathematical solutions are developed to study the effect of infiltration on nonlinear overland flow dynamics. To develop mathematical solutions, ...